Our new truck doesn't have a tonneau cover for the bed, and we're thinking that it would probably improve aerodynamic performance (and mileage) if it did. Does anyone have experience with adding one ...
We have an Undercover which lifts up at the back, and is removable. We only removed it once since it was installed, and it wasn't too hard to do(and we're not very handy). It locks, which we like - again, it keeps the basically honest people truly honest. :) Nice to set things on when you're getting things out of the truck cab, since it's sturdy. We're generally pretty happy with it. Haven't tried anything else.